Acta Amazonica最新文献_第7页

Resistance of acetylated Jacaranda copaia wood to termites and decaying fungi attack 乙酰化蓝花菜木对白蚁和腐朽真菌攻击的抗性

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202200832

Andressa Midori Yamauchi Baufleur, D. M. Stangerlin, F. N. Gouveia, Anna Sofya Vanessa Silvério da Silva, J. R. V. Oliveira, M. F. Silveira, A. Pimenta, R. Melo

{"title":"Resistance of acetylated Jacaranda copaia wood to termites and decaying fungi attack","authors":"Andressa Midori Yamauchi Baufleur, D. M. Stangerlin, F. N. Gouveia, Anna Sofya Vanessa Silvério da Silva, J. R. V. Oliveira, M. F. Silveira, A. Pimenta, R. Melo","doi":"10.1590/1809-4392202200832","DOIUrl":"https://doi.org/10.1590/1809-4392202200832","url":null,"abstract":"ABSTRACT The natural durability of the wood is essential for the definition of its use, and this property can be enhanced with the proper chemical treatment of the wood. Thus, the objective of this study was to evaluate the resistance to termites and decay fungi of Jacaranda copaia wood chemically modified through acetylation. Five experimental treatments were assessed: acetylation for 2, 4, 6 and 8 hours and a control (non-acetylated). The acetylation was carried out by immersing wood samples in acetic anhydride at 90 °C. Acetylated and control samples were subjected to the action of xylophagous termites (Nasutitermes sp.) and decaying fungi (Gloeophyllum trabeum and Trametes versicolor). The acetylation process significantly increased the resistance of Jacaranda copaia wood to the attack of the xylophagous organisms. There was no mass loss after exposure to termites of the wood in any of the acetylation treatments, while in the control wood, mass loss was 9.5%. Regarding the decaying fungi, mass loss occurred in all treatments. Acetylation for 6 and 8 hours were the most efficient chemical treatments, increasing the resistance class of the Jacaranda copaia wood to highly resistant.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43854847","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Abundance of Odonata in different microhabitats at an oxbow lake in the Peruvian Amazon 在秘鲁亚马逊的一个牛轭湖的不同微栖息地中丰富的蛇

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202200161

E. F. Medina-Espinoza

引用次数: 0

Insecticidal activity of Piper aduncum oil: variation in dillapiole content and chemical and toxicological stability during storage 胡椒油的杀虫活性：储存过程中Dilloapiole含量的变化及化学和毒理学稳定性

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202102292

M. Fazolin, A. F. M. Monteiro, H. Bizzo, P. E. Gama, Luana de Oliveira Viana, M. E. C. Lima

{"title":"Insecticidal activity of Piper aduncum oil: variation in dillapiole content and chemical and toxicological stability during storage","authors":"M. Fazolin, A. F. M. Monteiro, H. Bizzo, P. E. Gama, Luana de Oliveira Viana, M. E. C. Lima","doi":"10.1590/1809-4392202102292","DOIUrl":"https://doi.org/10.1590/1809-4392202102292","url":null,"abstract":"ABSTRACT The insecticidal effect of the essential oil of Piper aduncum (EOPA), and of its constituent dillapiole [1-allyl-2,3-dimethoxy-4,5-(methylenedioxy) benzene] in particular, is well documented in the literature and can be associated with its interference with the enzymatic detoxification in arthropods. However, no data exist on the range of dillapiole content associated with insecticidal activity, which is necessary to establish reliable dose-activity parameters for a formulated product. The oil composition can also change during storage after distillation, mainly due to environmental factors such as light incidence, atmospheric oxygen and temperature, which can be deleterious to oil quality. In this study, EOPA subjected to different storage conditions over four years and its rectified fractions were submitted to bioassays to evaluate their insecticidal effect by topical contact and residual contact against Spodoptera frugiperda. Our objectives were to determine the relationship between dillapiole content and the insecticidal activity of EOPA, and to evaluate its chemical and toxicological properties over time under different conditions. Our results showed that EOPA was stable with respect to the dillapiole content and the toxicological effect against S. frugiperda under different storage conditions for four years. The overall chemical composition of the EOPA did not vary significantly among storage conditions. EOPA with dillapiole content ranging between 68% and 100% showed greater insecticidal toxicity by residual and topical contact against S. frugiperda larvae.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44637138","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

The role of topographic-derived hydrological variables in explaining plant species distributions in Amazonia 地形水文变量在解释亚马逊地区植物物种分布中的作用

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202103682

G. Moulatlet, C. Rennó, F. O. Figueiredo, K. Ruokolainen, L. Banon, T. Emílio, H. Balslev, H. Tuomisto

{"title":"The role of topographic-derived hydrological variables in explaining plant species distributions in Amazonia","authors":"G. Moulatlet, C. Rennó, F. O. Figueiredo, K. Ruokolainen, L. Banon, T. Emílio, H. Balslev, H. Tuomisto","doi":"10.1590/1809-4392202103682","DOIUrl":"https://doi.org/10.1590/1809-4392202103682","url":null,"abstract":"ABSTRACT In Amazonian terra-firme non inundated forests, local floristic composition and species occurrence are explained by water availability as determined by topographic conditions. Topographic complexity can render these conditions quite variable across the landscape and the effects on plant ecological responses are difficult to document. We used a set of topographically defined hydrological metrics to evaluate community composition and single-species responses of four plant groups [pteridophytes (ferns and lycophytes), Melastomataceae, palms (Arecaceae) and Zingiberales] to topographic conditions in the middle Juruá River region, in western Brazilian Amazonia. The area spans two geological formations (Içá and Solimões) with contrasting topography. River terraces are also found along the main rivers in the area. Local topographic conditions were approximated by height above the nearest drainage (HAND), slope, and Strahler´s drainage order, all obtained from a SRTM digital elevation model (DEM). Data were analyzed using linear and generalized linear mixed models and regression trees. HAND was most successful in explaining floristic composition for all plant groups, except for Melastomataceae, and was more important in the hilly Içá formation than in the Solimões. Individual occurrences of 57% species were predicted by at least one of the topographic variables, suggesting a marked habitat specialization along topographic gradients. For these species, response models using SRTM-DEM-derived variables gave similar results than models using field-measured topography only. Our results suggest that topographical variables estimated from remote sensing can be used to predict local variation in the structure of plant communities in tropical forests.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45444259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Caryocar villosum attenuates inflammation by inhibiting CXCL1 activation and peripheral hyperalgesia through opioid pathway modulation 绒毛Caryocar通过阿片通路调节抑制CXCL1激活和外周痛觉过敏来减轻炎症

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202200552

G. L. Soares, Lívia Christine Ribeiro Hilgenberg, Giovana Reis Batista, Matheus Souza, R. Ferreira, I. Silva, T. Machado, Carlos Cleomir de Souza Pinheiro, F. Guilhon-Simplicio, A. Klein, A. Perez, E. Lima, C. Moura

{"title":"Caryocar villosum attenuates inflammation by inhibiting CXCL1 activation and peripheral hyperalgesia through opioid pathway modulation","authors":"G. L. Soares, Lívia Christine Ribeiro Hilgenberg, Giovana Reis Batista, Matheus Souza, R. Ferreira, I. Silva, T. Machado, Carlos Cleomir de Souza Pinheiro, F. Guilhon-Simplicio, A. Klein, A. Perez, E. Lima, C. Moura","doi":"10.1590/1809-4392202200552","DOIUrl":"https://doi.org/10.1590/1809-4392202200552","url":null,"abstract":"ABSTRACT The oil of Caryocar villosum is used in Amazonian folk medicine to treat pain and inflammatory conditions. So, we assessed the anti-inflammatory and antinociceptive properties of the ethanolic extract obtained from the fruit peels of this species. The acetic acid-induced writhing, carrageenan-induced mechanical hyperalgesia, formalin, carrageenan-induced paw edema and carrageenan-induced peritonitis tests were used on mice. The C. villosum ethanolic extract significantly inhibited the number of abdominal writhes, mechanical hyperalgesia and paw licking time in the second phase of the formalin test. At a dose of 300 mg kg-1, the extract also significantly reduced the volume of edema formed in the late phase and reduced the recruitment of leukocytes and neutrophils in the peritoneal cavity, as well as CXCL1 chemokine levels. It is suggested that the extract attenuates the leukocyte recruitment by inhibiting the CXCL1 activation. The peripheral antinociceptive activity occured through opioid pathway modulation because pretreatment with C. villosum ethanolic extract reversed the naltrexone-induced antinociception.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43600290","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Once a prey, now a predator: an unusual record of a scorpion (Scorpiones: Chactidae) predated by a katydid (Orthoptera: Tettigoniidae) in the western Brazilian Amazon 曾经是猎物，现在是捕食者：在巴西亚马逊西部，一只蝎子（Scorpines:Chactidae）被一只katydid（直翅目：Tettigonidae）捕食的不寻常记录

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202200151

M. R. Almeida, José Alessandro de França Nascimento, É. O. Machado, A. Lira

引用次数: 0

Cassava residues in the diet of slow-growing broilers 慢生长肉鸡日粮中的木薯残留物

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202100843

Silvia Silva Vieira, Ernilde Dos Santos Vieira, Francisco Raylan Sousa Barbosa, Adrielle S. Lima, Andressa Martins Marinho, C. Reis, Fernando Barbosa Tavares, L. R. S. Oliveira, K. Alves, E. R. D. S. Neta

{"title":"Cassava residues in the diet of slow-growing broilers","authors":"Silvia Silva Vieira, Ernilde Dos Santos Vieira, Francisco Raylan Sousa Barbosa, Adrielle S. Lima, Andressa Martins Marinho, C. Reis, Fernando Barbosa Tavares, L. R. S. Oliveira, K. Alves, E. R. D. S. Neta","doi":"10.1590/1809-4392202100843","DOIUrl":"https://doi.org/10.1590/1809-4392202100843","url":null,"abstract":"ABSTRACT Cassava by-products are abundant and largely unused in familiy agro-industries in the Amazon region, where slow-growing broilers are commonly raised. Thus the incorporation of cassava by-products in broiler feed may provide starch enrichment for better zootechnical performance. We evaluated the use of cassava residues instead of corn in the diet of slow-growing broilers. We determined the chemical composition of cassava scrapings (CS) and cassava starch residue (CSR), and tested the digestibility of the residues in 192 broilers and three treatments: inclusion of 30 g kg-1 CS or CSR and a control without residue, with eight replicates of eight broilers each. Digestibility was assessed through collection of total excreta from 19 to 22 days of age. Apparent and corrected metabolizable energy, and apparent digestibility coefficients of dry matter, crude protein and crude energy were significantly higher for CSR than CS. Therefore, only CSR was used in a performance experiment using 324 broilers 30 to 90 days old, distributed in four treatments (0; 6.8; 13.4 and 20 g kg-1 CSR in feed) with nine replicates of nine broilers each. There was no significant difference among treatments in weight gain, feed intake, yield of carcass, breast and viscera, meat color, luminosity, pH, shear force, cooking-weight loss and drip loss. As there was a significant reduction in feed conversion and thigh and drumstick yield for 20 g kg-1, we suggest the incorporation of CSR up to 13.4 g kg-1.","PeriodicalId":51309,"journal":{"name":"Acta Amazonica","volume":" ","pages":""},"PeriodicalIF":0.8,"publicationDate":"2022-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46977485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Postmortem interval estimation with Dermestes maculatus (Coleoptera: Dermestidae) and Chrysomya albiceps (Diptera: Calliphoridae) in Colombia 哥伦比亚斑纹皮蝇(鞘翅目:皮蝇科)和白色金蝇(双翅目:金蝇科)的死后间隔估计

IF 0.8 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-09-01 DOI: 10.1590/1809-4392202102482

Y. Ramos‐Pastrana, N. Zanetti, Eric CÓRDOBA-SUAREZ

引用次数: 0

Truth to Power: Calling for Another Collings. 权力的真理呼唤另一个科林斯

IF 5.3 4区环境科学与生态学

Acta Amazonica Pub Date : 2022-04-28 Print Date: 2022-05-01 DOI: 10.3399/bjgp22X719201

Euan Lawson